The last resting place of Saint Cecilia (the patron saint of music) features a stunning 13th-century fresco by Pietro Cavallini in the nuns' choir – the door is to the left of the church as you face it. Inside the church itself, below the altar, Stefano Moderno's mysterious, breathtaking sculpture is a delicate rendition of exactly how Saint Cecilia's miraculously preserved body was apparently found when it was unearthed in the Catacombs of San Callisto in 1599. Beneath the church you can visit the excavations of a maze of Roman houses, one of which is thought to have been that of the young Cecilia.